Amazon RDS vs Oracle Exadata

• For engineers with experience managing databases, setup is simple. And for the uninitiated, the RDS console interface becomes intuitive with some practice.
• Not having the maintain the underlying infrastructure is a great benefit of using RDS. Patching and backups can be scheduled from the console and from then on are pretty much automated.
• Right-sizing the DB instance to perform optimally with an application can be a very simple procedure. If a DB instance is not struggling to keep up, the instance size can be scaled up with just a few clicks.
• Baseline configurations are generally sane for most RDS instances. This allows novice developers and engineers to get the most out of the service without being a complete database administrator.

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• Customize-able for specific functionality optimized for combination of online transaction or analytical processing.
• Ability to serve mix workloads with resource management feature enables prioritizing allocation for certain workload.
• Scale-able on-premise with compatibility for cloud deployment offers flexible solution for organization considering to transition from on-premise solution.

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• There should be a proper listing of all parameter groups alongside the instances that they are attached to. This would help to see which instances would be affected if a parameter group is changed.
• RDS should allow SUPER privilege to the master user. A few advanced tasks(like getting a physical backup using MySQL Enterprise Backup) fail because SUPER privilege is not available for the master user.
• A few parameters are not modifiable in the parameter groups and the access to the server filesystem is not given. This should not be the case because as an advanced user, you might want to understand things a little deeper.

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• Patching can often become quite involved and convoluted. It should be more transparent and straightforward.
• Storage metrics can be difficult and time consuming to obtain.
• Basic administrative functions can be hard to repair when discovered.
• Vendor support can take a while to obtain. Generally several attempts are necessary to reach the right area of vendor expertise.

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• Switching back to RDS from Redshift has made my BI Dashboards much more performant (though again, we're not dealing with data in the magnitudes that justify the Redshift toolset).
• It has decreased our tech debt. Engineering has been much more straight forward.
• Our uptime has been improved by removing unnecessary data migration processes.

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• Single support from a single vendor with both machine and database from Oracle, which is costing us less.
• With Exadata, we need less technical manpower and less technical support. A business transaction with the integrated and centralized database helps us focus on other business needs.
• We don't need to buy additional licenses and Hardware for the next 3 to 5 years.

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